Porsche 911 Carrera Owner's Manual page 264

dust) are allowed to remain on the aluminum for too
long.
If possible, wash the wheels with a sponge or
wash brush about every two weeks. In areas
where salt is spread on winter roads or there
is a lot of airborne industrial dust, it is best to
clean the wheels weekly. The Porsche Light
Alloy Wheel Cleaner (ph-value 9.5) can be
used for this purpose. If the ph-value of
the detergent is incorrect, the protective
coating on the wheels will be destroyed.
Polishes which dissolve oxides, such as those
frequently used for other metals, or abrasive
tools or agents are unsuitable because they
break down the oxide lm of the protective
coating and will cause discoloration of the
wheel.
Every three months, after cleaning, coat the
wheels with a car wax or non-corrosive grease
(vaseline). Using a clean cloth thoroughly rub
the grease into the surface.
Door, roof, lid and window seals
Wash dirt (e.g. abrasion, dust, road salts) from
all seals regularly using warm soapy water.
Do not use any chemical cleaning agents or
solvents.
When there is a frost hazard, the outer door seals
and the front and rear lid seals can be protected
against freezing into place by a suitable care
product.
262
Maintenance, Car Care
In order to prevent damage to the anti-friction
coating, the inner door seals, the convertible
top seals and hardtop seals must not be
treated with care products.
Headlights, lights, interior and exterior
plastic parts, adhesive lms
Use only clean water and a little dishwashing
detergent to clean light lenses, plastic
headlight lenses, plastic parts and surfaces.
Do not clean when dry. Use a soft sponge or
a soft, lint-free cloth. Gently wipe the surface
without applying too much pressure. The
Porsche inside window cleaner is also suitable
for cleaning plastic surfaces. Follow the
cleaning instructions on the container. Never
use other chemical cleaners or solvents.
Rinse cleaned surfaces with clear water.
Leather
Characteristics and special features
The natural surface markings of leather, e.g.
creases, healed scars, insect sting marks,
structural differences and slight variations in shade
and grain add to the attractiveness of the natural
leather product.
A special mention must be made here of natural
leather. For natural leather, carefully selected
hides of the highest quality are used. It is not cov-
ered completely with dye on production. "Nature's
signature" is therefore easily recognizable. This
fine material is distinguished by an outstanding
seating comfort, special suppleness and a typical
patina.
Leather care and treatment
Clean all types of leather regularly to remove
fine dust using a soft, damp, white woolen
cloth or a commercially available microfiber
cloth.
Remove heavy contamination with Porsche
leather cleaner. Please always follow the
instructions for use given on the containers.
Caustic cleaners and hard cleaning objects
must not be used.
Perforated leather must under no circum-
stances get wet on its reverse side.